Id,Puzzle Title,Date,Solver,Setter,Constraints,Video,Video Length,Video Length (Minutes) 1839,Killer Hidden Arrows,2021-04-03,"[""Simon""]","[""Christoph Seeliger""]","[""Hidden Arrow"",""Killer""]","{""alt"":""Simple Maths Tricks For Sudoku!"",""caption"":""Simple Maths Tricks For Sudoku!"",""img_src"":""https://img.youtube.com/vi/FLiy_dZTAUM/mqdefault.jpg"",""href"":""https://www.youtube.com/watch?v=FLiy_dZTAUM""}",00:41:01,42